route control interlocking
41United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
42Rugby railway station — Infobox UK station name = Rugby code = RUG manager = Virgin Trains locale = Rugby borough = Rugby start = 1838 Closed and Rebuilt 1840 Closed and Rebuilt 1885 platforms = 3 usage0405 = 0.972 usage0506 = 1.096 usage0607 = 1.155 latitude = 52.379… …
43Rail transport in Victoria — Infobox rail railroad name = Railways of Victoria logo filename = logo size = system map caption = Victorian railway network, passenger lines in colour, freight only lines in grey marks = locale = Victoria, Australia start year = 1854 end year =… …
44Egypt, ancient — Introduction civilization in northeastern Africa dating from the 3rd millennium BC. Its many achievements, preserved in its art and monuments, hold a fascination that continues to grow as archaeological finds expose its secrets. This article… …
451987 Maryland train collision — 1987 Chase, Maryland train collision Details Date January 4, 1987 Time 1:04 pm Location Chase, Baltimore County, Maryland Country United States Rail line Northeast Corridor …
46SEPTA Main Line —      SEPTA Main Line A train operating on the SEPTA Main Line. Overview …
47Munich–Garmisch-Partenkirchen railway — München–Garmisch Partenkirchen Route number: 960 (München–Innsbruck) 999.6 (S 6 München–Tutzing) Line number: 5504 5540 (S Bahn Hauptbahnhof–Gauting) Line length: 100.6 …
48Railway semaphore signal — One of the earliest forms of fixed railway signal is the semaphore. These signals display their different indications to train drivers by changing the angle of inclination of a pivoted arm . Semaphore signals were patented in the early 1840s by… …
49Railroad switch — For other uses, see Switch (disambiguation). A right hand railroad switch with point indicator pointing to right …
50Southern Africa — Introduction southernmost region of the African continent, comprising the countries of Angola, Botswana, Lesotho, Malawi, Mozambique, Namibia, South Africa, Swaziland, Zambia, and Zimbabwe. The island nation of Madagascar is excluded… …
